Deferred

The Deferred class ensure deferred execution of code, even in case of fatal error.

Run code at function end or in case of error.

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The passed callback will be queued for execution on Deferred object destruction.

function duel(){
	echo "A: I will have the last word!\n";

	echo "B: Wanna bet?\n";

	$defer_B_last_word = new Deferred(function(){
		echo "B: Haha! Gotcha!\n";
	});
	
	die("A: I WIN!\n"); // Hahaha!

	echo "B: WUT?\n";
}

duel();

A: I will have the last word!
B: Wanna bet?
A: I WIN!
B: Haha! Gotcha!